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2,5-Cyclohexadiene-1,4-dione, 2,6-dichloro-

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Condensed phase thermochemistry data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Deltafsolid-254.kJ/molCcbSjostrom, 1936At 318 K
Quantity Value Units Method Reference Comment
Deltacsolid-2449.7 ± 8.4kJ/molCcbSmith, Bjellerup, et al., 1953Reanalyzed by Cox and Pilcher, 1970, Original value = -2451.7 ± 5.0 kJ/mol
Deltacsolid-2444.kJ/molCcbSjostrom, 1936At 318 K
Deltacsolid-2422.kJ/molCcbSwietoslawski and Starczedska, 1925 

Phase change data

Go To: Top, Condensed phase thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Deltasub69.9 ± 8.4kJ/molVCoolidge and Coolidge, 1927Reanalyzed by Pedley, Naylor, et al., 1986, Original value = 69.873 kJ/mol; ALS

Enthalpy of sublimation

DeltasubH (kJ/mol) Temperature (K) Method Reference Comment
69.9 ± 8.3274. - 315.QFCoolidge and Coolidge, 1927See also Jones, 1960 and Cox and Pilcher, 1970, 2.; AC

IR Spectrum

Go To: Top, Condensed phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Coblentz Society, Inc.

Condensed Phase Spectrum

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IR spectrum
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Notice: Except where noted, spectra from this collection were measured on dispersive instruments, often in carefully selected solvents, and hence may differ in detail from measurements on FTIR instruments or in other chemical environments. More information on the manner in which spectra in this collection were collected can be found here.

Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.

Additional Data

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Owner COBLENTZ SOC.
Collection (C) 2018 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin DOW CHEMICAL COMPANY
Source reference COBLENTZ NO. 05652
Date 1965/01/18
Name(s) 2,6-dichlorobenzo-1,4-quinone
State SOLUTION (5% CCl4 FOR 3800-1330, 5% CS2 FOR 1330-460)
Instrument DOW KBr FOREPRISM-GRATING
SPECTRAL CONTAMINATIONS DUE TO CS2 AROUND 855, AND CCl4 AROUND 1555 CM-1
Instrument parameters BLAZED AT 3.5, 12.0, 20.0 AND CHANGED AT 5.0, 7.5, 14.9 MICRON
Path length 0.0224 CM, 0.0220 CM
Resolution 2
Sampling procedure TRANSMISSION
Data processing DIGITIZED BY COBLENTZ SOCIETY (BATCH I) FROM HARD COPY

This IR spectrum is from the Coblentz Society's evaluated infrared reference spectra collection.


Mass spectrum (electron ionization)

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Mass spectrum
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Additional Data

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Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin Japan AIST/NIMC Database- Spectrum MS-NW-1105
NIST MS number 233501

All mass spectra in this site (plus many more) are available from the NIST/EPA/NIH Mass Spectral Library. Please see the following for information about the library and its accompanying search program.


References

Go To: Top, Condensed phase thermochemistry data, Phase change data, IR Spectrum, Mass spectrum (electron ionization), Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Sjostrom, 1936
Sjostrom, Av.G., De klorsubstituerade kinonernas och hydrokinonernas termokemi, Svensk. Kim. Tidr., 1936, 48, 121-124. [all data]

Smith, Bjellerup, et al., 1953
Smith, L.; Bjellerup, L.; Krook, S.; Westermark, H., Heats of combustion of organic chloro compounds determined by the "quartz wool" method, Acta Chem. Scand., 1953, 7, 65. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]

Swietoslawski and Starczedska, 1925
Swietoslawski, W.; Starczedska, H., Correction des donnees thermochimiques de M.A. Valeur, J. Chem. Phys., 1925, 22, 399-401. [all data]

Coolidge and Coolidge, 1927
Coolidge, A.S.; Coolidge, M.S., The sublimation pressures of substituted quinones and hydroquinones, J. Am. Chem. Soc., 1927, 49, 100-104. [all data]

Pedley, Naylor, et al., 1986
Pedley, J.B.; Naylor, R.D.; Kirby, S.P., Thermochemical Data of Organic Compounds, Chapman and Hall, New York, 1986, 1-792. [all data]

Jones, 1960
Jones, A.H., Sublimation Pressure Data for Organic Compounds., J. Chem. Eng. Data, 1960, 5, 2, 196-200, https://doi.org/10.1021/je60006a019 . [all data]

Cox and Pilcher, 1970, 2
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press Inc., London, 1970, 643. [all data]


Notes

Go To: Top, Condensed phase thermochemistry data, Phase change data, IR Spectrum, Mass spectrum (electron ionization), References